| 摘要 |
PCT No. PCT/AU86/00179 Sec. 371 Date Apr. 15, 1987 Sec. 102(e) Date Apr. 15, 1987 PCT Filed Jun. 23, 1986 PCT Pub. No. WO86/07621 PCT Pub. Date Dec. 31, 1986.A security device fits to a door frame or sill and operates between a locked and unlocked position so that the door can be locked and unlocked. The device comprises a first sleeve fixedly and non-rotatably attached to the door frame or sill, and a second sleeve which fits concentrically and rotatably within the first sleeve. The device also comprises a spindle which fits concentrically and rotatably within both the first and second sleeves and which is operably connected with a locking component on or within the door. When the device is to bet set in the locked position, the second sleeve is pushed downwardly and rotatably within the first sleeve against a bias located within the first sleeve against a bias located within the first sleeve such that the second sleeve releasably engages the first sleeve via engaging means and the spindle is pushed downwardly so that the locking component locks the door. When the device is to be set in the unlocked position, the second sleeve is first pushed downwardly and then is rotated such that the engaging means disengages from the first sleeve. The bias forces the second sleeve is an upward direction such that it engages the spindle to force the spindle upwards, thereby causing the locking component to be placed in an unlocked mode. |
